Patents by Inventor James McEwan

James McEwan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9103274
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger and a second relatively large low pressure (LP) turbocharger. The turbine of the LP turbocharger is connected in series downstream of the turbine of the HP turbocharger in a first exhaust gas passage. An exhaust bypass flow passage provides a bypass flow path around the HP turbine. A rotary valve is located at a junction of the bypass flow passage and a first exhaust gas flow passage. The rotary valve comprises a valve rotor which is rotatable to selectively permit or block flow to the LP turbine from either the first exhaust gas passage or the bypass gas passage.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: August 11, 2015
    Assignee: Cummins Emission Solution Inc.
    Inventors: James A. McEwan, Lee J. Robinson
  • Publication number: 20140144134
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12).
    Type: Application
    Filed: November 27, 2012
    Publication date: May 29, 2014
    Applicant: Cummins Turbo Technologies Limited
    Inventors: James A. McEwan, Lee J. Robinson
  • Patent number: 8316642
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12).
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: November 27, 2012
    Assignee: Cummins Turbo Technologies Limited
    Inventors: James A McEwan, Lee J Robinson
  • Patent number: 8011186
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12). The rotary valve (8) is operated to at least partially restrict flow to the LP turbine to generate a braking back pressure.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 6, 2011
    Assignee: Cummins Turbo Technologies Limited
    Inventors: James A McEwan, Lee J Robinson
  • Patent number: 7785893
    Abstract: A method of detecting a substance present in a gas or a gas mixture using SIFT-MS technology comprising the steps of inducing a supply of alkoxymethyl cations into the inlet of the flow tube, reacting a sample of the as with the alkoxymethyl cations, analysing the reacted gas sample, and calculating the concentration of trace levels of molecules containing heteroatoms in the reacted gas sample.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: August 31, 2010
    Assignee: SYFT Technologies Limited
    Inventors: Murray James McEwan, Paul Francis Wilson
  • Patent number: 7677040
    Abstract: An actuator rod (17) for a turbocharger pressure control assembly comprises a first elongate portion (17a) defining a first rod end and a second portion (17b) defining a second rod end. The first and second portions are pivotally joined to one another to allow a degree of relative pivotal motion therebetween in at least one plane perpendicular to the axis of said elongate first portion (17a).
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: March 16, 2010
    Assignee: Holset Engineering Company Limited
    Inventor: James A. McEwan
  • Publication number: 20090211246
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12). The rotary valve (8) is operated to at least partially restrict flow to the LP turbine to generate a braking back pressure.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 27, 2009
    Inventors: James A. McEwan, Lee J. Robinson
  • Publication number: 20090211245
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12). The valve (8) is operated during a fired mode of the engine to block exhaust gas flow through the exhaust bypass and at least partially restrict exhaust flow to the LP turbine to raise the exhaust gas temperature.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 27, 2009
    Inventors: James A. Mcewan, Lee J. Robinson
  • Publication number: 20090211247
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12).
    Type: Application
    Filed: January 29, 2009
    Publication date: August 27, 2009
    Inventors: James A. McEwan, Lee J. Robinson
  • Publication number: 20090068753
    Abstract: A method for the detection of chloramines and bromamines which are indicative markers particularly of lung diseases using flow tube, drift tube or atmospheric chemical ionisation technologies. The method can also be utilised to detect oxidative stress related diseases, test the prophylactic effect of drugs given to a patient, and to detect the level of chloramines in swimming pools and like situations.
    Type: Application
    Filed: October 18, 2005
    Publication date: March 12, 2009
    Inventors: Somasuntharam Tharmalingam Senthilmohan, Murray James McEwan
  • Publication number: 20080098489
    Abstract: The invention relates to a system for protecting a portable computing device wherein the system comprises a device housing adapted to protectively encase the portable computing device to prevent exposure of the portable computing device to potentially harmful operational conditions and a protectively hardened user input device in communication with the device housing. The system may further include a protectively hardened display in communication with the device housing, wherein the device housing allows a user of the portable computing device to operate the portable computing device via the protectively hardened user input device and the protectively hardened display.
    Type: Application
    Filed: December 18, 2007
    Publication date: April 24, 2008
    Applicant: TECHNOLOGY ADVANCEMENT GROUP, INC.
    Inventors: John MCEWAN, James MCEWAN
  • Publication number: 20070098405
    Abstract: Gigabit Ethernet connectivity is realized using off-the-shelf GIGABIT INTERFACE CONVERTER transceivers, wave division multiplexer/demultiplexers, and a single optical fiber. Simultaneous and bi-directional optical communication over a single optical fiber connecting two or more nodes is achieved by using at least one GIGABIT INTERFACE CONVERTER transceiver having at least one optical signal output and an optical signal input that are of different wavelengths from each other.
    Type: Application
    Filed: November 1, 2005
    Publication date: May 3, 2007
    Applicant: Technology Advancement Group
    Inventors: John McEwan, James McEwan
  • Publication number: 20060164800
    Abstract: The invention relates to a system for protecting a portable computing device wherein the system comprises a device housing adapted to protectively encase a portable computing device, a protectively hardened user input device in communication with the device housing, and a protectively hardened display in communication with the device housing. When the portable computing device is encased within the device housing, a user of the portable computing device can operate the portable computing device via the protectively hardened user input device and the protectively hardened display. The device housing may further comprise sealing elements, insulating elements, and shock-absorbing elements.
    Type: Application
    Filed: January 21, 2005
    Publication date: July 27, 2006
    Applicant: Technology Advancement Group, Inc.
    Inventors: John McEwan, James McEwan
  • Publication number: 20060128200
    Abstract: The present invention provides a securing device for securing a card to a socket within a computer is provided where the card and the socket are coupled. The device includes a unitary base member comprising a foundation portion dimensioned to receive a stationary socket and an arm portion orthogonally positioned relative to the foundation. A first engaging means is formed on at least one side of the arm member. The device also includes a clasp assembly that includes an opening for slideably receiving the arm portion of the unitary base member, a recess for receiving a non-connecting end of a card, and a second engaging means for securely engaging the first engaging means. The clasp assembly secures the card to the socket with the socket received in the foundation portion and edge of the card is received in the recess.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 15, 2006
    Applicant: Technology Advancement Group, Inc.
    Inventors: John McEwan, James McEwan, David Yates
  • Publication number: 20050050888
    Abstract: An actuator rod (17) for a turbocharger pressure control assembly comprises a first elongate portion (17a) defining a first rod end and a second portion (17b) defining a second rod end. The first and second portions are pivotally joined to one another to allow a degree of relative pivotal motion therebetween in at least one plane perpendicular to the axis of said elongate first portion (17a).
    Type: Application
    Filed: November 26, 2003
    Publication date: March 10, 2005
    Inventor: James McEwan
  • Patent number: 6658846
    Abstract: An actuator rod (17) for a turbocharger pressure control assembly comprises a first elongate portion (17a) defining a first rod end and a second portion (17b) defining a second rod end. The first and second portions are pivotally joined to one another to allow a degree of relative pivotal motion therebetween in at least one plane perpendicular to the axis of said elongate first portion (17a).
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: December 9, 2003
    Assignee: Holset Engineering Co. Ltd.
    Inventor: James A. McEwan
  • Patent number: 6405535
    Abstract: A turbocharger comprises a compressor wheel (6) mounted within a compressor housing (5) having a pressurized air outlet, a control valve (12) for regulating the pressure of air supplied from the compressor housing outlet, and pressure operated actuating means (13) mounted to the turbocharger for actuating the control valve. The actuator comprises a case (16) defining a pressure chamber and an inlet for delivering pressure to the chamber, and a substantially rigid connecting pipe (23) of well defined shape extending from the actuator inlet to the compressor housing (5). The end of the connecting pipe (23) remote from the case (16) communicates with the compressor outlet to deliver pressure to the actuator inlet.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: June 18, 2002
    Assignee: Holset Engineering Company, Ltd.
    Inventor: James A. McEwan
  • Patent number: 6238350
    Abstract: A method for analyzing a cardiac signal, e.g. an electrocardiogram signal, comprises continuously generating values RR(t) and QT(t), representing the RR and QT intervals respectively as functions of time, and operating on one or both values to compensate for the naturally occurring delay between the change in the RR interval and the resulting change in the QT interval. A delay may be introduced into the RR(t) value by a resistor-capacitor network having two time constants T1 and T2. After compensating for the delay, S(t), the slope of the graph of the QT interval against the RR interval may be found and used to generate Qtc(t), the corrected QT interval at a standard RR interval. Alternatively, an advance may be introduced into the value QT(t). Apparatus for generating Qtc(t) may include a hybrid digital/analog circuit applying an “xth root law.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: May 29, 2001
    Assignee: Reynolds Medical Limited
    Inventor: James McEwan McIntyre Neilson
  • Patent number: 3940692
    Abstract: A method and apparatus for monitoring recurrent waveforms such as electrocardiogram (e.c.g.) waveforms. The e.c.g. apparatus comprises integrators and stores for storing integrated segments of a normal, reference waveform complex. A timing circuit derives timing signals from the e.c.g. waveform to be monitored. The timing signals represent the time location of particular selected parts of the waveform which are to be compared with the corresponding parts of the stored waveform. The e.c.g. waveform is corrected by subtracting a version of the waveform after it has passed through a low pass filter from a delayed version. Corrected segments of the waveform are integrated and subtracted from the corresponding stored segments of the reference waveform to provide a difference signal and the difference signals are quantitatively summed. An output signal is produced if the total sum of the magnitudes of the difference signals exceeds a predetermined value to indicate an abnormal complex.
    Type: Grant
    Filed: December 14, 1973
    Date of Patent: February 24, 1976
    Assignee: The University of Edinburgh
    Inventor: James McEwan McIntyre Neilson